Abstract
PARIS. Academy ol Sciences, July 13.-M. P. Appell in the chair.—Paul Sabatier and Léo Espil: The reduction of the oxides of copper, lead, and nickel. Using calcium carbide as an indicator of the production of water, the reduction of cupric oxide in dry hydrogen is clear at 120° C. For lead dioxide, the corresponding temperature is 150° C. Nickel oxide, NiO, on reduction at low temperatures gives a mixture of metallic nickel and a suboxide of doubtful composition.—A. Haller and Mme. Ramart-Lucas: Syntheses by means of sodium amide. The oxide of propylenedimethylacetophenone and some of its derivatives. A new method of preparation of the γ-ketonic acids.—Charles Moureu and Georges Mignonac: Additional examples of the class of compounds described in a recent paper, and containing the grouping RR′C = N -CRR″. On hydrolysis, ammonia and a ketone are the products.—M. Calmette and L. Massol: The preservation of cobra poison and its antitoxin. Cobra poison slowly loses its toxic power on keeping; the antitoxin is absorbed not only by the toxic substance of the snake poison, but also by other substances accompanying it. The antitoxin serum preserves its power for at least six years.—Ph. A. Guye and F. E. E. Germann: The analysis of very small quantities of gas; application to the analysis of air. The apparatus illustrated is based on the application of a modified MacLeod gauge. An example of an analysis of air with the apparatus is given, in which the initial volume was only 0.25 c.c.—Maurice Paschoud: Application of the method of Walther Ritz to the problem of the uniform régime in a tube with square section.—J. Boussinesq: Observations on the preceding note of M. Paschoud.— Farid Bonlad bey: A new theorem on elastic displacements and its application to the simplification of the direct calculation of reactions of the supports of continuous beams.—E. Estanave: The exteriorisation of the photographic image by the autostereoscopic plate.—P. Le Rolland: The determination of the ratio of the times of oscillation of two pendulums. A modification of the photographic method described by Lippmann in 1897. For a period of comparison of only three minutes the ratio of the times can be determined with an accuracy of one part in a million. The photographic method possesses several advantages over the method of coincidences, especially if the difference between the times of oscillation of the two pendulums is small.—C. G. Bedreag: Electrification by the X-rays. The square of the maximum velocity of the electrons emitted is proportional to the frequency of the incident X-radiation.—G. Millochau: A new pyrometric method based on the absorption of some substances for the integral radiation. The determination of a temperature with the Fery pyrometer is extended to cases in which the image of the opening in the hot body is smaller than the blackened disc fixed to the thermoelectric couple. Readings are taken of the deviations with and without the interposition of absorptive plates of mica, glass, or celluloid.-MM. Massol and Faiicon: The ultra-violet spectra of aqueous solutions of nitric acid, metallic nitrates, and particularly of copper nitrate.-P. Chevenard: The expansion of ferro-nickels over a large range of temperature. Measurements were made of the expansion between —195° C. and 750° C., for a series of alloys containing increasing proportions of nickel. The results are given in the form of diagrams.—B. Bogitch: The ternary alloy of zinc, silver, and lead.—F. Taboury: Glucinum sulphate and its hydrates.-J. Clarens: The chlorometric method of Penot.—Marcel Guichard.: A new method of determination of the atomic weight of iodine. The method is based on the use of purified iodine pentoxide, and its decomposition into iodine and oxygen by a high temperature. These elements are weighed separately. The general mean of the experiments was, for O=16, I = 126.92, identical with the value currently accepted.-L. Tschugaeft: A new method of preparation of the complex compounds of bivalent platinum.—André Brochet and Maurice Bauer: The addition of hydrogen to aliphatic compounds with ethylene linkages in presence of nickel under moderate pressure. The reactions were carried out at the ordinary temperature under hydrogen pressures of fifteen atmospheres or less. Descriptions of the reduction of l-octene, cinnamic acid, sodium cinna-mate, methyl cinnamate, piperonylacrylic acid, eugenol, sapol, and isoeugenol are given.—Maurice Lugeon: The autochone strata below the Morcles layer.-Emile Hang: New observations on the tectonic of the valley of Saint Pons, near Gémenos (Bouches-du-Rhône).—P. Idrac: The irregularities of the wind. -Julien Loisel: The nomographic representation of the reduction of the barometer to sea-level.—O. Lignier; New contributions to the knowledge of the flower of the Fumarieas and the Crucifereae.-Edgar Zaepffel: The distribution of the stomata in the plantules of some graminaceous plants.—E. Chuard and R. Mellet: Nicotine in the by-products of the culture of tobacco. The waste products of tobacco culture contain sufficient nicotine to be of commercial value in the preparation of insecticides.—J. Künckel d'Herculais: Correlation between the mortality of Ailanthus glandulosa and the disappearance of Samia cynthia.—Em. Bourquelot and Al. Lndwig: The biochemical synthesis of the β-monoglucosides of meta-and para-xylene glycols.
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Societies and Academies . Nature 93, 551–552 (1914). https://doi.org/10.1038/093551a0
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DOI: https://doi.org/10.1038/093551a0